A cobpobation oei couuecticut



Odi. l5, 1929. Q PETERMANN 1,731,935

DOORKNOB G ONS TRUCT I ON Filed Oct. l, 1927 v j? INVENTOR. MMM@ A TTORNEYS.

Patented @eb 15, 1929 lll'li STTS DOGRKE'OB CONSTRUCTION Application filed etober 1, 1927'. Serial No. 223,295.

My improvement relates to door knob constructions and has for one of objects to provide a sheet metal spindle hav no; two poo tions swiveled together. lt iur er has for its object to provide in such a spindle enlargements on the in er ends the swiveled portions. further has for its object to provide an integral stop on one of said enlargements. lt further has for its object to provide .means tor more easily inserting the spindle holding screw.

'l'he following` a description of an embodiment oil my invention7 reference being had to the accompanying drawings7 in which,

Fig. l shows a partial longitudinal seetion oi a knob construction embodyin` my invention;

Fig. 2 is a section ot the same on the line 2-27 Fig. l;

Fig. 3 is a section of the same on the line 3 3, Fig. l;

Fig. 4c is a side elevation oi the spindle of Fig. l;

Fig. 5 is a plan view ot the spindle with the end enlargement omitted;

llig. 6 is a section on the line (5 6, l; and

Fig. 7 is a section on the line 7M?, Fig.

Referring more particularly to the drawings, 2-2 are end portions ot the spindle1 each portion consistingv of two spaced away walls il homing,Y one edge of each wall connected to the corresponding edge ot the other by a peripheral portion G so as to form integral structure. The body ot this stri-.ctn e is preferably U-shaped as shown. The outer ends are preferably split so that the end portions the walls are more readily separable. This is accomplished by the slot 'lhe sides ot these members are corrugated so as to form internal beads l0, 'which are recessed so that the outer walls or" the corrugated poV 'ons are spaced away from 'the inner walls oi' the knob socket when introduced therein.

ln order to swivel these parts together7 l provide a rod l2, the ends of which entend into the inner ends of the end portions 2 being held therein. At least one end portion 2 is so connected trat it can turn upon this rod. ln order to accomplish this result l preiwith the rod should prevent relative long'itir dinal movement and may prevent any relative movement whatsoever.

rlhe construction thus ardes ribed is shown in Fig. 5 and constitutes a spindle ein bodying` the swivel feature olf my invention suitable for some locks. i

lhen, however'5 the divided roll back hub of the lock has a larger opening;l the inner ends oi the end portions should be enlarged. ln order to accomplish this l provide two members 18 and 2O which are lirst U-shaped, and placing them on the inner ends of the end portions bend their edges 2l overso to clamp them in place as shown in Fig'. 7. @n one o tf them l torni an integral stop 22 by forcing a portion ot' the metal downward before the member is applied. This is possible because the member is then a lJ-shaped mem-4 ber with its inside bottom portion accessible. This obviates the necessity ot appli/ing a separately formed stud to the enla] meinber as has heretofore been customary. y

In use the end of the spindle isinserted in the knob socket 24.- provided withfthe hole so that the space between the walls is in alinement with the hole and its walls expanded by a wedding member or screw 28 passing through the hole 26 so as to `make binding` engagement therewith, as described in my application Serial No. l75,059, filed March 14, 1927.

ln securing my channel shanls in position some dilicnlty is sometimes experienced7 particularly when the wall of the socket oi' the knob is comparatively thin, in holding the screw 28 at right angles tothe axis of the spindle while being; inserted. ln order to render the insertion of the screw easier l form the socket of thev knob with a reentrant portion 30 which enters the space between the walls of the spindle. rlhe hole 26 passes through this portion 30. The presence of this portion is possible because the wails of the spindle are spaced away. Since the hole for the screw passes 'through this projection 3() vthe screw has on two of its sides guiding surfaces carried by the knob socket which tend to keep it at right angles to the axis of the spindle while boing inserted.

This projection also acts as a guide so that the spindle when inserted is always properly alined with the hole 26.

As will be evident to those skilled in the art, my invention permits various modifications without departing from the spirit thereof or the scope ofthe appended claims.

W'hat I claim is:

l. In a knob construction a spindle consisting of two sheet metal end portions having spaced away walls extending throughout the lengths of said end portions and a rod having elongated ends entering said portions and gripped in position by the walls thereof so as to maintain said rod and end portions in alinement, the connection at one end' at least of the rod being a swiveled connection.

2. In a knob construction a spindle consisting of two sheet metal end portions having spaced away walls and a rod entering said portions, and held in position by the walls thereof, said rod having an annular circumferential groove, and one of said portions having indentations forming parts protruding therefrom so as to enter said groove and form a swiveled connection.

3. In a knob construction a spindle consisting of two end port-ions having spaced away Walls, and a rod entering said portions and held in position by the walls thereof, said rod having an annular circumferential groove on each end and said portions having indentations forming parts protruding into said grooves, the connection thus formed being at one end at least of the rod a swiveled connection.

4. In a knob construction a spindle consisting of two U-shaped end portions, a rod entering said portions and held in position by the walls thereof, the connection at one end at least of the rod being a swiveled connection, and strips bent around the inner ends of said U-shaped members and over the edges thereof.

5. In a knob construction a spindle consisting of two sheet metal end portions having spaced away walls, rod entering said portions and held in position by the walls thereof, the connection at one end at least of the rod being a swiveled connection, and strips bent around the inner ends of said members, one of said strips having a protuberance integral therewith.

6. In a knob construction the combination of a spindle having spaced away walls and a knob having a socket into which the end of such spindle enters and a hole in the wall of said socket in alinement with the space between said walls, said socket having a reentrant portion entering said space and through which said hole passes, and a screw in said hole engaging the inner sides of said walls.

In testimony whereof, I have signed my name to this specilication this 29th day of September, 1927.

OTTO PETER-MANN. 

